<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>nav</title>
<link rel="stylesheet" type="text/css" href="css/nav.css">
<script type="text/javascript" src="js/jquery-3.3.1.js"></script>
<script type="text/javascript" src="js/nav.js"></script>
</head>
<body>
<nav>
	<dl>
		<dt>一级导航的name值</dt>
		<dd>
			<!-- 二级导航 -->
			<dl>
				<dt>二级导航的name值</dt>
				<!-- 三级导航 -->
				<dd>三级导航的name值</dd>
				<!-- 三级导航结束 -->
			</dl>
			<!-- 二级导航结束 -->
		</dd>
	</dl>
</nav>
<div></div>
</body>
</html>